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      Top Picks
      • Siemens Circuit Breaker 5SN4140-8CN
      1/1
      Siemens Circuit Breaker 5SN4140-8CN
      $ 33 .20

      ✔ In Stock (Can ship in 5-7 days)

      Quantity
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      The Siemens Circuit Breaker is high quality!
      Circuit breaker 230/400V, 10kA, 1-pole, D, 40A
      Model
      product brand name SENTRON
      product designation Miniature circuit breaker
      design of the product Miniature circuit breaker 5SN
      General technical data
      number of poles 1
      number of poles / note 1P
      tripping characteristic class D
      circuit-breaker / Design 5SN4CN
      overvoltage category 3
      degree of pollution 2
      Voltage
      insulation voltage
      with single-phase operation / at AC / rated
      value
      250 V
      with multi-phase operation / at AC / rated value 440 V
      Supply voltage
      type of voltage AC
      operational current / at AC / rated value 40 A
      supply voltage / at AC / rated value 400 V
      operating voltage
      with multi-phase operation / at AC / maximum 440 V
      at DC / rated value / maximum 72 V
      supply voltage frequency
      rated value 50 Hz
      Protection class
      protection class IP IP20, with connected conductors
      Switching capacity
      switching capacity current
      acc. to EN 60898 / rated value 10 kA
      Dissipation
      power loss W / for rated value of the current / at AC
      / in hot operating state / per pole
      3.3 W
      Current
      Tripping residual / rated value / derated current / at
      40 Cel
      36.96 A

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      Reviews

      • K

        Kristina Hinton

        Aug 10, 2025

        Siemens Circuit Breaker 5SN4140-8CN
        I appreciate the helpful staff at OKmarts – they're always willing to assist!
        Helpful
        Unhelpful
      • R

        Ramiro Martinez

        Dec 06, 2024

        Siemens Circuit Breaker 5SN4140-8CN
        Quick and efficient order processing and delivery.
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        Unhelpful
      • R

        Rick Waters

        Oct 14, 2024

        Siemens Circuit Breaker 5SN4140-8CN
        We're impressed by OKmarts' commitment to customer satisfaction - they delivered the device as promised.
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        Unhelpful
      • G

        Glorianna Cardenas

        Aug 11, 2024

        Siemens Circuit Breaker 5SN4140-8CN
        Easy on line order and shipment and delivery as promised. No problems.
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        Unhelpful
      • A

        Anonymous user

        Nov 25, 2022

        Siemens Circuit Breaker 5SN4140-8CN
        All was ok! No problems whatsoever.
        Helpful
        Unhelpful

      Siemens Circuit Breaker 5SN4140-8CN

      $ 33 .20
      Click here to view shipping costs.

      ✔ In Stock (Can ship in 5-7 days)

      Quantity
      MOQ : 10
      Payment Methods
      T/T pay VISA pay mastercard pay Diners Club pay Discover pay JCB pay American Express pay Stripe pay PayPal pay Google pay Apple pay Link pay venmo pay
      • Online Support 24/7

      • 12 Months Warranty for New Products

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